EP0532641A1 - Prefilled, disposable device for introducing a pharmacologically active substance into a body cavity of a patient, method for manufacturing said device and mould apparatus for making said device. - Google Patents
Prefilled, disposable device for introducing a pharmacologically active substance into a body cavity of a patient, method for manufacturing said device and mould apparatus for making said device.Info
- Publication number
- EP0532641A1 EP0532641A1 EP91911404A EP91911404A EP0532641A1 EP 0532641 A1 EP0532641 A1 EP 0532641A1 EP 91911404 A EP91911404 A EP 91911404A EP 91911404 A EP91911404 A EP 91911404A EP 0532641 A1 EP0532641 A1 EP 0532641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- mould
- seal
- tubular part
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000013543 active substance Substances 0.000 title claims description 5
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000012768 molten material Substances 0.000 claims description 12
- 239000012815 thermoplastic material Substances 0.000 claims description 8
- 210000003708 urethra Anatomy 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- HDDSHPAODJUKPD-UHFFFAOYSA-N fenbendazole Chemical compound C1=C2NC(NC(=O)OC)=NC2=CC=C1SC1=CC=CC=C1 HDDSHPAODJUKPD-UHFFFAOYSA-N 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 235000015110 jellies Nutrition 0.000 claims description 2
- 239000008274 jelly Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000036512 infertility Effects 0.000 description 2
- 239000003589 local anesthetic agent Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 206010013082 Discomfort Diseases 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
Definitions
- Prefilled, disposable device for introducing a pharmacologically active substance into a body cavity of a patient, method for manufacturing said device and mould apparatus for making said device.
- the present invention relates to a prefilled, disposable device for introducing a pharmacologically active sub ⁇ stance, preferably in the form of a jelly, into a body cavity of a patient, for instance into the urethra, com ⁇ prising a container for the substance and a tubular part communicating with the container and intended to be in ⁇ serted into said cavity, said tubular part ending in an opening having a frangible seal with an inner side facing the inside of said device and an outer side facing the outside, said seal being located a slight distance within said opening and preferably being in the form of a mem ⁇ brane, the outer side of said seal further being provided with an integrally formed actuating rod projecting through said opening to the outside of the device, said actuating rod being arranged to rupture and remove said seal upon actuation and before the insertion of said tubular part into said body cavity, the parts of the walls of the tubular part being located on the outer side of said seal further being provided with rounded edges in order to alleviate any discomfort which may be experienced by
- the invention also relates to method and an mould appara ⁇ tus for manufacturing the invention.
- the local anesthetic may for instance be introduced through a tubular part inserted into the body cavity in question.
- SUBSTITUTE SHEET shaped part ending in a tubular part The free end of the tubular part is sealed by means of a frangible seal.
- the container and the funnel-shaped part are ultrasonically welded together.
- the opening at the free end of the tubu ⁇ lar part has rounded edges and the frangible seal is located a slight distance within the tubular part.
- the frangible seal is provided with an integrally formed actuating rod projecting outside the opening and the frangible seal is broken upon actuation of the rod.
- CH-A-608 373 discloses another device of the same general kind as the prior art device described above, the main difference being the field of application, which in this case is the introduction of a pharmacologically active substance into the rectum of a patient.
- frangible seal also should be ruptured in said clearly defined way irrespective of the manner in which the actuating rod is operated.
- a high standard may have to be set regarding the sterility of the tubular part, particu- larly if the cavity in question is the urethra.
- the present invention aims to provide a device of the kind described above which meets these high standards.
- said actuating rod at its outer end is provided with at least one supporting rod which is formed integrally with said actuating rod and which extends to said container, said supporting rod being connected to said container by means of a frangible connection, by which means said supporting rod serves as a safe-guard against an accidental rupturing of said seal and as a guide for a controlled movement of said actuating rod, when actuated, in order to ensure a correct rupture of said frangible seal as well as to serve as a handle for actuating said actuating rod, said supporting rod in con ⁇ junction with said actuating rod also defining and pro ⁇ tecting an area of said tubular part which is to be kept sterile.
- the above-mentioned object of the invention further is achieved by means of a method of manufacturing said device from a thermoplastic material by injection-moulding said device in an mould apparatus comprising a core having the general configuration of the inner side of said container and said tubular part, said core being located in a mould having the general configuration of the outer side of said device, including said actuating rod and said supporting rod, the thermoplastic material being injected in molten form into said mould at that part of said mould which defines said supporting rod and/or said actuating rod, by which means said molten material is forced to pass mainly through the annular space in said mould defining said frangible seal before forming the container and said tubular part.
- the object of the invention further is achieved in that said device is made in an mould apparatus comprising a
- SUBSTITUTESHEET mould containing a core, said mould defining the outer side of said device and said core defining the inner side of said container and said tubular member, said core and said mould being longitudinally movable with respect to each other for opening said mould and for the ejection of said device, said core further being longitudinally movable with respect to said mould by means of a micro ⁇ meter adjustment screw, by which means the thickness of said seal defined between the tip of said core and said mould at the end of said tubular part can be finely adjusted before and during the manufacturing process.
- Fig 1 is a longitudinal view of the device
- Fig 2 is a view showing the device rotated 90 degrees relative to the view in fig 1
- Fig 3 is an enlarged part view, partly broken away, of the end of the tubular part showing the frangible seal and the actuating rod (detail B in Fig 1)
- ig 3a is an enlarged view of detail C in Fig 3
- ig 3b is an enlarged view of detail A in Fig 1
- ig 3c shows section I - I in Fig 3b
- ig 4 is a vertical half-section through an mould apparatus having a mould for manufacturing a device according to the invention, in a closed state
- ig 5 is a vertical section of the apparatus taken along the line V - V in fig 4
- ig 6 is a vertical section corresponding to fig 4 but in which the mould apparatus is beginning to open.
- ig 7 is an enlarged detail A of fig 6 showing those parts of the mould which shape the tube and the actuating rod in vicinity of the frangible seal in the first step of releasing the finished product, corresponding to the situation in fig 7,
- ig 8 is a vertical section corresponding to the one shown in fig 6,but illustrating the next step in opening the mould.
- Fig 9 is an enlarged detail B of fig 8 showing the lower end of the adjustment rod.
- ig 10 is a vertical section corresponding to the one shown in fig 8, but illustrating a further step in opening the mould.
- Fig 11 is a vertical section corresponding to the one shown in fig 10, but illustrating the final step in opening the mould and the ejection of the finished product, and
- Fig 12 is a vertical section taken along the line XII - XII in fig 11.
- the device in its preferred embodiment has the general shape of a syringe with a cylindrical container 1.
- the cylinder 1 is open at one end and closed at the other end by means of an integrally formed tubular part 2 having a frangible seal 3.
- SU end of the cylinder 1 may be closed by means of a plunger (not shown) and the contents of the cylinder 1 may be ejected through the tubular part 2 by means of the plunger when the seal 3 has been ruptured, for which purpose the cylinder is provided with two holding tabs 18' ,18" adjacent the open end, as normal in syringes.
- the end of the cylinder carrying the tubular part 2 has an inwardly directed flange or shoulder 6 which may be obliquely oriented relative to the longitudinal axis of the cylinder so that it forms a truncated cone with the narrow end facing away from the cylinder, said narrow end defining a circular opening which is concentric with the longitudinal axis of the cylinder.
- the tubular part 2 comprises a relatively short cylindrical part 5 which is connected to the shoulder 6 at said opening defined by said shoulder 6 and which merges into a conically tapering part 7 ending into a tube 4.
- the free end of this tube 4 ends in an opening 8 having an edge 9 with a smoothly rounded contour.
- a section through the edge 9 would have a shape being about half- circularly curved, cf fig 3, the ends of the half-circle merging continuously into the inner side and in the outer side of the tube 4 respectively.
- the frangible seal 3 is located at the juncture of the curved part or edge 9 to the inner side of the tube 4 or slightly within this junc ⁇ ture and is in the form of a comparatively thin membrane.
- An actuating rod 10 formed integrally with the membrane extends coaxially with the tube 4 from the center of the membrane past the edge 9.
- the side of the membrane not carrying the actuating rod may be provided with a half- spherical part 17 being concentric with the actuating rod.
- this half-spherical part 17 The primary function of this half-spherical part 17 is to collect air bubbles entrained with the thermoplastic mate- rial when the device is i jectio -moulded in order to prevent that such air bubbles remain in the membrane, which might render this inoperative, or in the actuating
- actuating rod As illust- rated in Fig 3, has been chosen to be smaller than the inner diameter of the tube, resulting in that the membrane 3 has a pronounced extent, the actuating rod of course may be widened conically or otherwise at the juncture to the membrane.
- Fig 3a illustrates how the rod 10 ends in a conical part 21 joined to the membrane 3.
- a suitable base angle ⁇ of the conical part 21 may be 42 degrees.
- This widening of the rod may even be done such that the widened part of the actuating rod actually is in direct contact with the inner side of the tube 4 along a band- shaped part of its periphery, the width of said band- shaped part essentially corresponding to the thickness of the membrane.
- This widened part may have a half-spherical shape being complementary to the half-spherical part 17, thus in principle forming a ball-joint in the end of the tube 4 which is attached to the inner side of the tube in a band-shaped, peripheral area, the actuating rod extend ⁇ ing out from the ball-joint through the opening at the end of the tube. From the view-point of manufacturing the de- vice by means of the mould apparatus described below it is however preferable that the membrane has a width which is about the same as the thickness of the membrane irre ⁇ spective of whether the widened part is ball-shaped or not.
- the end of the actuating rod 10 is provided with a cross ⁇ bar 15 from which two supporting rods 11' ,11" extend backwards towards the container 1.
- the centerlines of the two supporting rods 11' ,11" and of the actuating rod 10 are located in a common plane.
- the supporting rods are each attached to the cylindrical part 5 of the tubular part 2 by means of a frangible connection 12' respectively 12".
- the size of the frangible connections is chosen such that the outside of the supporting rods is in alignment with the outer side of the cylinder 1.
- the frangible con ⁇ nections 12' ,12" each comprise a part 13' respectively 13" substantially shaped as a truncated cone integrally formed with the respective supporting rod in such a way that the base of the truncated cone is joined to the sup ⁇ porting rod.
- the tip of the truncated cone is joined to the cylindrical part 5 by means of a narrow bridge 22',22", preferably in the form of a truncated pyramid.
- the parts 13' ,13" of course also may have a half-spherical shape or any other suitable tapering shape.
- the width of the supporting rods (11' ,11") is greater than the outer diameter of the tube 4 in at least one point in the vicinity of the tube 4.
- the cross bar 14 is provided with a tab 14 for actuating the actuating rod.
- the outer end of the actuating rod 10 may be provided with a protective, preferably circular disc 16, which is perpendicularly oriented relative to the actuating rod.
- This optional protective disc 16 is indi ⁇ cated with dashed lines in fig 2.
- the supporting rods 11' ,11" in a preferred embodiment are provided with kerbs or cut-out parts 19' ,19",20' ,20" located between the cross bar 14 and a plane touching the periphery of the tip of the tube 4 at the outermost part of the edge 9.
- These kerbs will function as hinges when the frangible seal is broken by bending the tab 14 side ⁇ ways around an axis parallel to the cross bar 15. This will result in that the membrane 3 is ruptured in a parti ⁇ cularly controlled way. The membrane starts to rupture at the part of the membrane which is located furthest away in the direction which is opposite to the direction the tab is bent and the rupture will continously progress around both sides of the rod 10.
- the rod 10 will roll upon the rounded edge 9 of the opening 8 result ⁇ ing in that the edge of the rod 10 still being joined to the membrane 3 will move more or less perpendicularly to the inside wall of the opening 8, thus minimizing the risk that any part of the membrane is drawn outwards through the opening 8 before rupturing.
- the devices are normally delivered in a sterile condition in so called "blister packages", which to some extent protect the device during transport and storage.
- the device has to be handled and manipulated by the user before use when the device is taken out of the package and during the interval up to the actual use of the device.
- the risk is great that the tip of the actuat- ing rod is subjected to a force which easily may lead to a rupturing of the seal even if the force is small since the arm of leverage of the actuating rod has to be compara ⁇ tively large and the seal has to be comparatively thin in order that the seal may rupture in the desired, clearly defined way.
- the supporting rods will however counteract any such force and thus guard against an unintentional rupturing of the seal during this handling or manipulation of the device.
- the device according to the invention can be opened in several different ways, all ensuring a correct opening of
- the frangible seal the frangible seal.
- the device can be opened by lightly striking the tip of the actuating rod, i.e. actually the cross-bar, in the longitudinal direction of the device and more or less perpendicularly against a surface. Even if the direction of the movement deviates from the perpendicular, the fact that the tip is stabili ⁇ zed laterally by the supporting rods will give the actuat ⁇ ing rod a movement which is mainly longitudinal, having the result that forces having about the same magnitude will be transmitted simultaneously from the periphery of the actuating rod to the joint between seal and rod. This means that the seal will break in a clear, well-defined way around the entire periphery.
- the supporting rods Although it in principle is possible to accidentally touch the tube and the part of the conical part adjacent thereto,the supporting rods also will define an area which is to be kept sterile even, , since the rods in conjunc- tion with the cross-bar give a clear visual indication of the area which must be kept sterile. It would of course be more difficult to touch the tip of the tube accidentally if the cross-bar is provided with the protective disc referred to above.
- the provision of at least one part on the supporting rods and/or on the actuating rod having a width being greater than the diameter of the tube or the provision of the protective disc safeguards the sterility of the tube 4 and of the adjacent part of the conical part 7 even if the device unintentionally is put down on a table or similar prior to use.
- the device is made of a thermoplastic material, as men ⁇ tioned above.
- Preferred materials are polyolefins and particularly a homopolymer of polypropylene.
- the mould apparatus for manufacturing the device com ⁇ prises four main parts, namely a first block 101 carrying a core 102 for shaping the interior of the device, an ejector part 103, a second block 104 containing a mould for shaping the exterior of the device including the actuating rod and the supporting rods, and a third block 105 through which the molten plastics material is injected into the mould.
- the main parts are arranged con ⁇ secutively in this order along a center line indicated with the dash-dotted line 106 coinciding with the longitu- dinal center line of the device and are movable relative to each other along this line.
- a horizontal section through the mould apparatus would be mainly square in configuration and the main parts are guided in their move ⁇ ment relative to each other by means of four guiding rods extending in parallel to the center line 106 through bores arranged at the corners of the square configuration. Only two of these guiding rods are illustrated in the drawings, one rod 107 being fixedly attached to said first block 101 and extending through bores 108 and 109 in said ejector part 103 respectively in said second block 104, each being provided with a respective bushing 108' and 109'.
- a second rod 110 is attached to the third block 105 and extends
- the third block 105 comprises an upper part 113 and a lower part 114, an injection nozzle 112 being coaxial with the center line 106 extending through both these parts and opening into the mould when the mould apparatus is in its closed state.
- two guiding rods 116 are obliquely oriented relative to the center line 106, each one extending downwardly-outwardly on opposite sides of the centerline 106 through a respective bore 115 in said lower part 114 and are fixedly attached to said lower part.
- the guiding rods 116 project from the underside of the lower part 114. Only one of these two guiding rods 116 is however illustrated in the drawings.
- the guiding rods 116 cooperate with aligned bores 118 in first opposing mould parts 117 which are slideable inward ⁇ ly and outwardly in opposite directions on a horizontal surface being perpendicular to said center line 106.
- These mould parts 117 are supported in the second block 104 and are provided with the mould surfaces shaping the outer side of tubular part 2 of the device including the actuat ⁇ ing rod 10, the supporting rods 11 and the tab 14, except for the rounded edges on the end of the tube and the area in the immediate vicinity thereof.
- the mould parts 117 each also contain a second mould part 119 which are slideably arranged in a respective bore or opening 120 defined in said mould part 117.
- the bore 120 is inclined upwardly towards the center line 106.
- the mould part 119 further is biased towards the center line 106 by means of a helical spring 122A surrounding a shaft portion 122 of said mould part 119 which is located in said bore, on one hand resting against a shoulder 123 on said part 119 and on the other hand resting on a flange 124 provided in said bore 120.
- the shaft 122 extends past
- SUBSTITUTESHEET said flange 124 and is provided with a stop 121 located on the opposite side of the flange. In the closed state of the mould apparatus there is a slight play between the stop and the flange.
- the mould part 119 further is provided with a half-cir ⁇ cular, horizontal, vertically oriented lip 125 defining a half-circular groove which is open downwardly.
- the groove is half-circular in cross-section and forms the mould surface shaping the edge 9 of the device.
- the lips 125 also define a vertically oriented, cylindrical hole located centrally in relation to the half-circular grooves.
- the lip 125 further has a planar, horizontal mould surface which shapes the outer surface of the frang- ible seal.
- the central hole is chamfered at the lips 125 in order to define an obliquely oriented surface for shap ⁇ ing the widened part of the actuating rod.
- the second block also contains a third moulding surface in the form of a cylindrical bore 126 which is coaxial with the center line 106 and which merges into the other mould ⁇ ing surfaces in the second block in the closed state of the mould apparatus.
- the first block 101 supports the core 102 which comprises three main components, namely an outer cylindrical sleeve 127 forming the main moulding surface for the inner side of the device and which preferably is integrally joined to said first block, an adjustment rod 129 located centri- cally in a central longitudinal bore in said outer sleeve 127, said adjustment rod extending through the tip 130 of the cylindrical sleeve 127 and forming the moulding sur ⁇ face for the inside of the tube 4 and the frangible seal 3, and finally an inner sleeve 128 supporting and guiding the adjustment rod 129.
- the core 102 which comprises three main components, namely an outer cylindrical sleeve 127 forming the main moulding surface for the inner side of the device and which preferably is integrally joined to said first block, an adjustment rod 129 located centri- cally in a central longitudinal bore in said outer sleeve 127, said adjustment rod extending through the tip 130 of the cylindrical sleeve 127 and forming the moulding sur ⁇ face for the
- the adjustment rod is rotatably journalled in the inner sleeve and in the outer sleeve and the upper end of the adjustment rod 129 is provided with micrometer threads 131 being in engagement with corre ⁇ sponding interior micrometer threads 131' located in the inner bore of the outer sleeve 127 just above the upper end of the inner sleeve 128.
- the micrometer threads are best seen in Fig 7.
- the inner sleeve and the adjustment rod extend all the way through the first block to the lower part thereof.
- the lower end of the adjustment rod is provided with a fixedly attached, horizontally oriented gear wheel 132 which is in engagement with a horizontally oriented and rotably journalled worm gear 133 having a shaft 134 extending to the exterior of the block 101, by which means the worm gear, and consequently also the gear wheel and the adjustment rod, can be rotated.
- the gear wheel and the worm gear are located in a recess in the under side of the first block 101 and are covered by a plate 135 attached to the block by means of suitable screws 136.
- the adjustment rod is attached to said plate 135 by means of a screw 137 and is biased against the plate 135 by mans of suitable springs, for instance Belleville washers 138 interposed between the head of the screw and the plate.
- suitable springs for instance Belleville washers 138 interposed between the head of the screw and the plate.
- the ejector part 103 essentially consists of a plate or disc having a bore or hole 139 through which the core 102 projects.
- the part 140 of the core which extends through the hole 139 has an upwardly conically tapering shape, the hole 139 having a complementary shape.
- the diameter of the hole at the upper edge corresponds to the diameter of the core.
- the underside of the second block rests on the ejector part 102 and is provided with two recesses 141' 141" which are connected with the main mould cavity or cylindrical bore 126. These recesses form the mould cavities for the holding tabs 18',18" in conjunction with the upper surface of the ejector part 103 when the mould apparatus is in the closed state.
- the ejector part 103 can be moved relative to the first block 101 by means of two ejector rods 142' ,142" extending through two bores 143 (only one being shown) in parallel to the center line 106 and projecting down past the underside of the first block 101, where they are interconnected by means of an actuator block 144.
- the main parts of the mould apparatus also are intercon- nected by means of two latch or hook means regulating the sequence of the movements of the main parts when the mould apparatus is opened.
- An elongated first hook means 145' ,145" is rigidly attached to the exterior of the third block 105 and extends downwards past the second block 104 in parallel to the centerline 106 in the closed state of the apparatus.
- the hook means is guided and held against the exterior of the second block 104 by means of an elongated, horizont ⁇ ally oriented plate 146 attached to the second block by means of suitable screws 147 provided with suitable spacers.
- the first hook means is provided with a cam sur ⁇ face 148 in the vicinity of its lower end.
- the lower end is also provided with a stop means 150 for engagement with the plate 146 and a surface on said second block facing downwards.
- a second hook means 151 is rigidly attached to the first block 101 and extends past the ejector means 103 to the second block 104.
- the second hook means 151 also is held and guided against the exterior of the second block 104 by means of said plate 146.
- the second hook means further is provided with a horizontal shoulder 152 which may be en ⁇ gaged by a horizontally movable latch 153 which is biased towards its latching position by means of a spring 154.
- the latch 153 further is provided with an actuator 155 which may be actuated by the cam surface 148, thus moving the latch 153 out of engagement with said shoulder 152 against the action of said spring 154 and freeing the second hook means 151.
- the moulding apparatus also contains cooling conduits or channels in the blocks 101 and 104 as well as in the core 102 for keeping the mould at a temperature which is suffi ⁇ ciently far below the solidifying temperature of the thermoplastic material to allow the molded device to harden rapidly but sufficiently high to allow the molten material to completely fill all cavities in the mould without any detrimental effect on the finished product.
- Figs 4 and 5 show the moulding apparatus in the closed state immediately after the injection of the molten thermoplastic material and as described in detail above.
- Figs 6 and 7 show the first step of opening the moulding apparatus after the solidification of the device.In this step the third block 105 containing the injection nozzle is moved slightly upwards relative to the other blocks.
- the mould parts 117' ,117" in the second block consequently move slightly outwards under the influence of the obliqu ⁇ ely oriented guiding rods 116' ,116" in the obliquely ori ⁇ ented bores 118' ,118".
- the second mould parts 119' ,119" will however not move outwards together with the mould parts 117' ,117" since they are pushed inwardly under the influence of the springs 122A',122A".
- the outward movement of the mould parts 117' ,117” instead forces the second mould parts 119' ,119" to move vertically upwards, result- ing in that the lips 125',125” move vertically upwards until they clear the edge 9 of the device.
- the fact that the lips 125',125" are provided with the obliquely ori ⁇ ented surfaces will facilitate the release of the device from the mould and minimize the risk for damage to the seal and the edge at the end of the tube.
- the ejec ⁇ tor means 103 is moved upwardly relative to the first block 101 by means of the ejector rods 142' ,142". In this way the finished device is pushed off the core 102 and entirely released from the mould apparatus, whereafter the device can be transmitted to a filling station.
- the first one of these features is the provision of two symmetrically arranged supporting rods with frangible connections.
- the mould apparatus works with relatively high pressures when the molten material is injected into the mould cavity. Although the main part of the molten material is introduced through the annular space defining the frangible seal, the injection pressure is also transmitted to the interior of the mould cavity via the comparatively small passage defining the frangible connection between supporting rod and container. This pressure will give cause comparatively great forces on the core and thus cause a deflection thereof since these forces act close to the free end of the cantilevered core. Such a deflection is however not
- SUBSTITUTESHEET desirable, since the width of the frangible seal or mem ⁇ brane in the device when designed for use in the urethra is about one tenth of a millimeter, and any deflection of the core of this size or greater would result in that the actuating rod is joined directly to the wall of the tube. An attempt to rupture the seal by means of the actuating rod might in this case result in that the wall of the tube breaks instead of the frangible seal, causing precisely those rough edges which can not be accepted in a device of this kind. The provision of two symmetrically arranged, opposing frangible connections will cause two opposing forces to be introduced into the mould cavity which effec ⁇ tively neutralize each other.
- the tube is provided with an inner diameter which is greater on the side of the seal facing the interior of the device than on the side facing the open end of the tube, i. e. that the diameter of the core shaping this part of the tube is larger than the outer diameter of the lip.
- This feature is best seen in Fig 7. This will have the result that minor deviations in the position of the tip of the core are compensated from the viewpoint of achieving a faultless frangible seal around the entire periphery of the actuating rod.
- an important feature in the method of manufacturing the device is that the major part of the molten material is introduced into the mould through the comparatively narrow slit in the mould defining the frang- ible seal.
- the mould cavities for shaping the actuating rod and the sup ⁇ porting rods will be filled first and a minor amount of molten material will bulge out through the narrow passages defining the frangible connections into the parts of the mould cavities shaping the cylinder and the tubular part. The molten material then almost entirely will flow through the space defining the frangible seal.
- the molten material then flows on through the parts of the mould cavity defining the tube and the conically tapering part, on the way encapsulating the bulges of material projecting from the narrow passages defining the frangible connections.
- These bulges thus will be firmly united with the main body of the device and the frangible connections will be homogeneous and be given a good quality in the same way as discussed in the preceding paragraph in con ⁇ nection with the frangible seal.
- the mould is cooled in order to allow the shaped device to harden within a reasonable time.
- the temperature of the molten mate ⁇ rial suitably is about 230 - 250 degrees Celsius, the temperature of the moulding apparatus being kept at 35 - 40 degrees Celsius. This great temperature difference of course to some extent will influence the flow characte ⁇ ristics of the molten material, which is undesirable in the narrow mould parts around the frangible seal, since the desired homogenity in these parts might be impaired.
- the method according to the invention therefore also makes a virtue of the fact that it is very difficult to cool the tip of the core and the other parts of the mould cavity in the vicinity thereof as efficiently as the other parts of the mould and these parts consequently are allowed to be heated by the stream of hot, molten material.
- a result is that the material will flow more easily in these parts and especially through the very narrow space defining the frangible seal, by which means the the mould cavities in this vicinity are particularly well filled and the homo ⁇ genity of the material is yet more enhanced.
- the rela ⁇ tively high temperature will also re-melt so called "cold welds" should such occur in spite of all.
- the method according to the invention thus also eliminates the necessity of elaborate and expensive cooling arrange ⁇ ments in and around the tip of the core.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Prostheses (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Separation Of Gases By Adsorption (AREA)
- Medicinal Preparation (AREA)
- External Artificial Organs (AREA)
- Materials For Medical Uses (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
L'invention se rapporte à des dispositifs jetables servant à introduire des substances dans des cavités du corps d'un patient. Un tel dispositif comprend un récipient (1) pour la substance et une partie tubulaire (2) se terminant par une ouverture (8), dans laquelle est placé une fermeture hermétique cassable (3) et qui est pourvue d'une tige actuatrice (10) qui casse et retire la fermeture hermétique (3) lorsqu'elle est actionnée. La tige actuatrice (10) comporte des tiges de support (11', 11'') qui s'étendent dans le récipient (1) et qui sont raccordées au récipient (1) par des raccords cassables (12', 12''), ces tiges de support (11', 11'') servant ainsi de protection contre toute rupture accidentelle de la fermeture hermétique (3) et de guide pour un mouvement limité de la tige actuatrice (10), ce qui permet d'assurer une rupture correcte de la fermeture hermétique cassable (3). Les tiges de support (11', 11'') servent également de poignées pour actionner la tige actuatrice (10) et elles définissent et protègent une zone devant être maintenue stérile. L'invention se rapporte également à un appareil de moulage et à un procédé permettant de fabriquer un tel dispositif.The invention relates to disposable devices for introducing substances into body cavities of a patient. Such a device comprises a container (1) for the substance and a tubular part (2) terminating in an opening (8), in which is placed a breakable hermetic closure (3) and which is provided with an actuator rod (10 ) which breaks and removes the hermetic seal (3) when actuated. The actuator rod (10) has support rods (11', 11'') which extend into the container (1) and which are connected to the container (1) by breakable connectors (12', 12'') , these support rods (11', 11'') thus serving as protection against any accidental breaking of the hermetic closure (3) and as a guide for limited movement of the actuator rod (10), which makes it possible to ensure correct breaking of the breakable hermetic seal (3). The support rods (11', 11'') also serve as handles to operate the actuator rod (10) and define and protect an area to be kept sterile. The invention also relates to a molding apparatus and a method for manufacturing such a device.
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9002065A SE9002065D0 (en) | 1990-06-08 | 1990-06-08 | DEVICE FOR INTRODUCING A SUBSTANCE INTO A BODY CAVITY OF A PATIENT |
SE9002065 | 1990-06-08 | ||
AU73833/91A AU642989B2 (en) | 1990-06-08 | 1991-03-27 | Device for introducing a substance into a body cavity of a patient |
AU73833/91 | 1991-03-27 | ||
PCT/SE1991/000391 WO1991018640A1 (en) | 1990-06-08 | 1991-06-04 | Prefilled, disposable device for introducing a pharmacologically active substance into a body cavity of a patient, method for manufacturing said device and mould apparatus for making said device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0532641A1 true EP0532641A1 (en) | 1993-03-24 |
EP0532641B1 EP0532641B1 (en) | 1996-08-14 |
Family
ID=25637419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91911404A Expired - Lifetime EP0532641B1 (en) | 1990-06-08 | 1991-06-04 | Prefilled, disposable device for introducing a pharmacologically active substance into a body cavity of a patient, method for manufacturing said device and mould apparatus for making said device |
Country Status (13)
Country | Link |
---|---|
US (1) | US5531707A (en) |
EP (1) | EP0532641B1 (en) |
JP (1) | JP3125009B2 (en) |
AT (1) | ATE141176T1 (en) |
CA (1) | CA2084788C (en) |
DE (1) | DE69121406T2 (en) |
DK (1) | DK0532641T3 (en) |
ES (1) | ES2090339T3 (en) |
GR (1) | GR3021425T3 (en) |
HK (1) | HK22697A (en) |
HU (1) | HU213805B (en) |
NO (1) | NO302860B1 (en) |
WO (1) | WO1991018640A1 (en) |
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US5800373A (en) * | 1995-03-23 | 1998-09-01 | Focal, Inc. | Initiator priming for improved adherence of gels to substrates |
SG46610A1 (en) * | 1993-12-28 | 1998-02-20 | Tetsuro Higashikawa | Syringe |
AUPM922394A0 (en) * | 1994-11-03 | 1994-11-24 | Astra Pharmaceuticals Pty Ltd | Plastic syringe with overcap |
WO1996029370A2 (en) | 1995-03-23 | 1996-09-26 | Focal, Inc. | Redox and photoinitiator systems for priming for improved adherence of gels to substrates |
US5900245A (en) | 1996-03-22 | 1999-05-04 | Focal, Inc. | Compliant tissue sealants |
IT1277390B1 (en) * | 1995-07-28 | 1997-11-10 | Fatro Spa | SYRINGE FOR THE INTRAMAMMARY ADMINISTRATION OF A VETERINARY DRUG COMPOSITION |
CA2209406C (en) * | 1996-07-24 | 2007-05-15 | David W. Birch | Gas capsule and gas delivery system |
ZA978537B (en) | 1996-09-23 | 1998-05-12 | Focal Inc | Polymerizable biodegradable polymers including carbonate or dioxanone linkages. |
SE511989C2 (en) * | 1997-09-22 | 2000-01-10 | Gudmar Olovson | needleguard |
DE69815887T2 (en) | 1997-12-17 | 2004-05-13 | Astrazeneca Ab | MEDICAL DEVICE FOR INTERNAL HEAT TREATMENT AND MEDICINE ADMINISTRATION |
PA8447101A1 (en) * | 1998-02-18 | 2000-05-24 | World Pharmaceutical S A | DISPENSER FOR PHARMACEUTICAL PRODUCTS, PARTICULARLY LAXANT AND SIMILAR SUBSTANCES |
FR2799738B1 (en) * | 1999-10-13 | 2002-02-01 | Oreal | DISTRIBUTION NOZZLE WITH A SPLITABLE END PART AND A CONTAINER THUS EQUIPPED |
WO2003002043A2 (en) | 2001-06-29 | 2003-01-09 | Coloplast A/S | A bag for collection of bodily fluids |
US7682353B2 (en) | 2001-06-29 | 2010-03-23 | Coloplast A/S | Catheter device |
US7311698B2 (en) | 2001-09-24 | 2007-12-25 | Coloplast A/S | Urinary catheter assembly allowing for non-contaminated insertion of the catheter into a urinary canal |
FR2868047B1 (en) * | 2004-03-24 | 2007-08-31 | Oreal | DISTRIBUTION CAPSULE |
US8591457B2 (en) * | 2005-08-10 | 2013-11-26 | Alza Corporation | Method for making a needle-free jet injection drug delivery device |
US8435220B2 (en) * | 2005-10-24 | 2013-05-07 | Sperian Eye and Face Protection, Inc. a Delaware corporation | Emergency eyewash station having an expandable bellows waste collection system |
WO2007050617A1 (en) * | 2005-10-24 | 2007-05-03 | Sperian Eye & Face Protection, Inc. | Emergency eyewash station having a piercing mechanism to puncture a sealed fluid bladder |
US8316477B2 (en) * | 2005-10-24 | 2012-11-27 | Sperian Eye & Face Protection, Inc. | Cartridge assembly for a self-contained emergency eyewash station |
FR2896168B1 (en) * | 2006-01-19 | 2008-10-17 | Aguettant Soc Par Actions Simp | PRE-FILLED HYPODERMIC SYRINGE EQUIPPED WITH A CLOGGING DEVICE |
WO2007106847A2 (en) * | 2006-03-15 | 2007-09-20 | Sperian Eye & Face Protection, Inc. | Emergency eyewash station and dispensing structure therefor |
US7988668B2 (en) | 2006-11-21 | 2011-08-02 | Medtronic, Inc. | Microsyringe for pre-packaged delivery of pharmaceuticals |
WO2009061315A1 (en) * | 2007-11-06 | 2009-05-14 | Hospira, Inc. | Injection device and method of assembly and activation |
US8464918B1 (en) * | 2010-01-29 | 2013-06-18 | Unicep Packaging, Inc. | Child resistant closure for unit-dose packaging |
EP2554486A1 (en) * | 2011-08-04 | 2013-02-06 | Nestec S.A. | A packaging with a spout for flowable products |
US9585784B2 (en) | 2011-08-29 | 2017-03-07 | Coloplast A/S | Catheter activation by handle removal |
BE1022939B1 (en) * | 2015-08-19 | 2016-10-20 | Hubert De Backer Nv | Drop dispenser and method for manufacturing a drop dispenser |
US20180344950A1 (en) * | 2015-11-26 | 2018-12-06 | Alexander Philip Goumeniouk | Triggered quantal drug delivery device, method and system ("tqd3") |
US10179678B2 (en) * | 2017-04-26 | 2019-01-15 | The Hartz Mountain Corporation | Applicator with breakaway cap |
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US2859478A (en) * | 1954-06-21 | 1958-11-11 | Johnson & Johnson | Mold structure |
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-
1991
- 1991-06-04 US US07/956,758 patent/US5531707A/en not_active Expired - Lifetime
- 1991-06-04 ES ES91911404T patent/ES2090339T3/en not_active Expired - Lifetime
- 1991-06-04 DE DE69121406T patent/DE69121406T2/en not_active Expired - Lifetime
- 1991-06-04 HU HU9203872A patent/HU213805B/en unknown
- 1991-06-04 DK DK91911404.1T patent/DK0532641T3/en active
- 1991-06-04 AT AT91911404T patent/ATE141176T1/en not_active IP Right Cessation
- 1991-06-04 EP EP91911404A patent/EP0532641B1/en not_active Expired - Lifetime
- 1991-06-04 WO PCT/SE1991/000391 patent/WO1991018640A1/en active IP Right Grant
- 1991-06-04 JP JP03510964A patent/JP3125009B2/en not_active Expired - Lifetime
- 1991-06-04 CA CA002084788A patent/CA2084788C/en not_active Expired - Lifetime
-
1992
- 1992-12-07 NO NO924722A patent/NO302860B1/en not_active IP Right Cessation
-
1996
- 1996-10-23 GR GR960402797T patent/GR3021425T3/en unknown
-
1997
- 1997-02-27 HK HK22697A patent/HK22697A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9118640A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2090339T3 (en) | 1996-10-16 |
NO302860B1 (en) | 1998-05-04 |
CA2084788A1 (en) | 1991-12-09 |
HU213805B (en) | 1997-10-28 |
HK22697A (en) | 1997-02-27 |
HUT64243A (en) | 1993-12-28 |
EP0532641B1 (en) | 1996-08-14 |
DE69121406D1 (en) | 1996-09-19 |
US5531707A (en) | 1996-07-02 |
JPH05507640A (en) | 1993-11-04 |
WO1991018640A1 (en) | 1991-12-12 |
DE69121406T2 (en) | 1997-01-02 |
GR3021425T3 (en) | 1997-01-31 |
ATE141176T1 (en) | 1996-08-15 |
NO924722D0 (en) | 1992-12-07 |
CA2084788C (en) | 2002-06-11 |
DK0532641T3 (en) | 1996-09-02 |
HU9203872D0 (en) | 1993-05-28 |
NO924722L (en) | 1992-12-07 |
JP3125009B2 (en) | 2001-01-15 |
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